753 citations · 4.3k across the 89 of their papers we have counts for
5 papers · 1 filter
Delay-Throughput Tradeoff for Supportive Two-Tier Networks
Long Gao, Rui Zhang, Changchuan Yin +1
Consider a static wireless network that has two tiers with different priorities: a primary tier vs. a secondary tier. The primary tier consists of randomly distributed legacy nodes…
On Ergodic Sum Capacity of Fading Cognitive Multiple-Access and Broadcast Channels
Rui Zhang, Shuguang Cui, Ying-Chang Liang
This paper studies the information-theoretic limits of a secondary or cognitive radio (CR) network under spectrum sharing with an existing primary radio network. In particular, the…
Scaling Laws for Overlaid Wireless Networks: A Cognitive Radio Network vs. a Primary Network
Changchuan Yin, Long Gao, Shuguang Cui
We study the scaling laws for the throughputs and delays of two coexisting wireless networks that operate in the same geographic region. The primary network consists of Poisson dis…
Wideband Spectrum Sensing in Cognitive Radio Networks
Zhi Quan, Shuguang Cui, Ali H. Sayed +1
Spectrum sensing is an essential enabling functionality for cognitive radio networks to detect spectrum holes and opportunistically use the under-utilized frequency bands without c…
Spatial-Spectral Joint Detection for Wideband Spectrum Sensing in Cognitive Radio Networks
Zhi Quan, Shuguang Cui, Ali. H. Sayed +1
Spectrum sensing is an essential functionality that enables cognitive radios to detect spectral holes and opportunistically use under-utilized frequency bands without causing harmf…